a SELF 2.16 The file Utility contains the following data about the cost of electricity (in $) during July 2015 for a random sample of 50 one-bedroom apartments in a large city. TEST 96 171 202 178 147 102 153 197 127 82 157 185 90 116 172 111 148 213 130 165 141 149 206 175 123 128 144 168 109 167 95 163 150 154 130 143 187 166 139 149 108 119 183 151 114 135 191 137 129 158 a. Construct a frequency distribution and a percentage distribu- tion that have class intervals with the upper class boundaries $99, $119, and so on. b. Construct a cumulative percentage distribution. c. Around what amount does the monthly electricity cost seem to be concentrated?

Help me please

Question8

Suppose the correlation between height and weight for adults is +0.40.What proportion (or percent) of the variability in weight can be explained by the relationship with height?

What value should go in the overlap of the two circles? (that's where the 'X' is). Explain your reasoning

I need help learning how to solve this with a TI-84 calculator and a table of normal values. No excel or R please.

I need help solving

Suppose the mean of X is 94. What does the mean of X become if you multiply X by 1.22?  (Use two decimal places, ex: 12.34)

For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 22 students, and the distribution of total study hours per week is bell-shaped with a mean of 12 hours and a standard deviation of 2.8 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between 9.215 on Statistics each week. Xhours and 14.785 hours b) 95% of the students spend between 6.512 X hours and 6.512 X hours on Statistics each week. c) 99.7% of the students spend between 20.288 x hours and 20.288 x hours on Statistics each week.